#!/usr/bin/env python3
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"""Calculates the checksum of file or directory and checks it against a known
hash."""

import logging
from pathlib import Path

from ..helpers.misc import get_multiple_files_hash_str


def verify(files: str | Path | list[Path | str], known_hash: str) -> int:
    """Verifies the checksum of directory."""
    # ensure we have a list
    if isinstance(files, list):
        pass
    else:
        files = [files]
    relevant_files = []
    # if the entry in the list is a directory, just recursively glob all files,
    # otherwise append the file to the list to-be-verified files
    for i in files:
        if not isinstance(i, Path):
            i = Path(i)
        if i.is_file():
            relevant_files.append(i)
        else:
            relevant_files.extend(j for j in i.rglob("*") if j.is_file())
    logging.info("Known hash is:      %s", known_hash)
    calculated_hash = get_multiple_files_hash_str(relevant_files)
    logging.info("Calculated hash is: %s", calculated_hash)
    err = 0
    if not known_hash == calculated_hash:
        logging.error("Known hash is:      %s", known_hash)
        logging.error("Calculated hash is: %s", calculated_hash)
        logging.error("Hashes do not match.")
        err = 1
    else:
        logging.debug("Hash matches.")
    return err
